Systems Engineer

Join Parry LabsAt Parry Labs we believe the modern combat advantage relies on the speed and scale of open systems. We're redefining the edge of the ever-changing battlespace by delivering game changing capabilities to our warfighters through digital engineering, software, and hardware solutions that are essential to our core of being a Digital Systems Integrator.Born digital and agile, Parry Labs is building a winning team to be the premier provider for Next Generation Mission Systems Integration across air, land, sea, space and cyber.Are you ready to be an instrumental part of experts in the industry? Join us in the innovation of integration at Parry and apply to help develop the technologies of tomorrow while reaching new heights in your career today.About the JobThe Platform is a ~140,000-line Rust workspace spanning 24 crates: no_std embedded primitives, an async Tokio daemon, a 30,000-line distributed consensus engine, post-quantum cryptographic infrastructure, and a real-time WebSocket dashboard. It targets defense and critical infrastructure deployments where deterministic execution and zero-panic guarantees are non-negotiable. We need a Rust engineer who can own the full workspace from hardware abstraction layers to API servers, hold the architecture sound as the system scales to full multi-site production, and treat the no-panic policy as an inviolable contract.Duties & ResponsibilitiesOwn and extend the multi-crate Rust workspace: consensus engine, coordination engine, transport layer, daemon orchestration, data ingestion, hardware abstraction layer, and 18+ supporting cratesMaintain no_std compatibility across core crates for constrained embedded deployment targetsImplement and harden production readiness gates: structured logging, rate limiting, replay protection, metrics collection, and durable state persistenceDesign and optimize the async runtime architecture (Tokio): task orchestration, graceful shutdown, backpressure handling, and cancellation safetyEnforce the no-panic runtime policy across the entire workspace; systematically eliminate unwrap and expect from all production code pathsBuild and maintain CI pipelines, fuzz harnesses (cargo-fuzz), and property-based tests (proptest)Manage feature-flag complexity and compilation performance across the workspaceSupport multi-site deployments: cross-compilation, air-gapped packaging, and site-specific configurationMaintain safe API boundaries between cryptographic crates and the rest of the workspaceOwn the mesh member lifecycle state machine and guard all transitions against invalid progressionsOther duties as assignedRequired Qualifications5+ years of professional Rust development in production systemsDeep no_std and embedded Rust experience: heapless, fixed-capacity collections, custom allocatorsStrong async/Tokio expertise: task orchestration, graceful shutdown, backpressure, and cancellation safetyTrack record building multi-crate workspaces with clean dependency management and feature gatingExperience with network protocol implementation: TCP/UDP framing, wire formats, gossip protocolsProficiency with the Rust testing ecosystem: cargo-fuzz, proptest, criterion, integration test harnessesComfort with CI/CD for Rust projects: cross-compilation, clippy enforcement, MIRI for unsafe validationPreferred QualificationsExperience with distributed systems, fault-tolerant consensus, or distributed fault tolerance researchPrior work in defense, aerospace, or environments requiring deterministic execution guaranteesExperience building hardware abstraction layers for embedded sensors or constrained receiversContributions to the Rust ecosystem: open-source crates, RFCs, or conference talksFamiliarity with structured binary cryptographic envelope formatsUnderstanding of Merkle tree construction and public key commitment schemesWhy Join Parry Labs?At Parry Labs, we foster a culture of curiosity and collaboration. Employees are given the autonomy to leverage their skills in creating state-of-the-art tech solutions that aid in the protection of the American Warfighter. We encourage new and bold ideas that push the status quo. It is this entrepreneurial spirit that drives us.Parry Labs will support you with workplace flexibility, a commitment to the health and well-being of you and your family and provide opportunities to work with a purpose. We are committed to supporting your success in both your professional and personal lives with benefits such as education assistance and unlimited paid time off, just to name a few.